While I agree with those above, the answer to your question is "maybe". It depends on your ISP. Some ISPs allow you to have mutiple IPs on the same connection. With those setups you could attach a switch to the modem and then connect x number of PCs to the switch. Each PC will get it's own public IP.

So, if you have the same functionality with your ISP you could attach a switch to your modem and connect the routers to the switch. each router would then have its's own public IP.

You first need to check with your ISP to see if they will give you multiple IPs on the one connection. If not, a switch will do you no good and you would probably create more problems than solutions with two routers trying to get a single IP.

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